260 lines
9.8 KiB
TypeScript
260 lines
9.8 KiB
TypeScript
/**
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* @license
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* Copyright 2025 Google LLC
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* SPDX-License-Identifier: Apache-2.0
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*/
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import { describe, it, expect, beforeEach, afterEach, vi } from 'vitest';
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import { GrepTool, GrepToolParams } from './grep.js';
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import path from 'path';
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import fs from 'fs/promises';
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import os from 'os';
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// Mock the child_process module to control grep/git grep behavior
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vi.mock('child_process', () => ({
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spawn: vi.fn(() => ({
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on: (event: string, cb: (...args: unknown[]) => void) => {
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if (event === 'error' || event === 'close') {
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// Simulate command not found or error for git grep and system grep
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// to force fallback to JS implementation.
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setTimeout(() => cb(1), 0); // cb(1) for error/close
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}
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},
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stdout: { on: vi.fn() },
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stderr: { on: vi.fn() },
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})),
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}));
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describe('GrepTool', () => {
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let tempRootDir: string;
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let grepTool: GrepTool;
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const abortSignal = new AbortController().signal;
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beforeEach(async () => {
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tempRootDir = await fs.mkdtemp(path.join(os.tmpdir(), 'grep-tool-root-'));
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grepTool = new GrepTool(tempRootDir);
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// Create some test files and directories
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await fs.writeFile(
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path.join(tempRootDir, 'fileA.txt'),
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'hello world\nsecond line with world',
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);
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await fs.writeFile(
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path.join(tempRootDir, 'fileB.js'),
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'const foo = "bar";\nfunction baz() { return "hello"; }',
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);
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await fs.mkdir(path.join(tempRootDir, 'sub'));
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await fs.writeFile(
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path.join(tempRootDir, 'sub', 'fileC.txt'),
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'another world in sub dir',
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);
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await fs.writeFile(
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path.join(tempRootDir, 'sub', 'fileD.md'),
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'# Markdown file\nThis is a test.',
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);
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});
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afterEach(async () => {
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await fs.rm(tempRootDir, { recursive: true, force: true });
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});
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describe('validateToolParams', () => {
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it('should return null for valid params (pattern only)', () => {
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const params: GrepToolParams = { pattern: 'hello' };
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expect(grepTool.validateToolParams(params)).toBeNull();
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});
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it('should return null for valid params (pattern and path)', () => {
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const params: GrepToolParams = { pattern: 'hello', path: '.' };
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expect(grepTool.validateToolParams(params)).toBeNull();
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});
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it('should return null for valid params (pattern, path, and include)', () => {
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const params: GrepToolParams = {
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pattern: 'hello',
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path: '.',
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include: '*.txt',
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};
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expect(grepTool.validateToolParams(params)).toBeNull();
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});
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it('should return error if pattern is missing', () => {
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const params = { path: '.' } as unknown as GrepToolParams;
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expect(grepTool.validateToolParams(params)).toBe(
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`params must have required property 'pattern'`,
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);
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});
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it('should return error for invalid regex pattern', () => {
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const params: GrepToolParams = { pattern: '[[' };
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expect(grepTool.validateToolParams(params)).toContain(
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'Invalid regular expression pattern',
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);
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});
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it('should return error if path does not exist', () => {
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const params: GrepToolParams = { pattern: 'hello', path: 'nonexistent' };
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// Check for the core error message, as the full path might vary
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expect(grepTool.validateToolParams(params)).toContain(
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'Failed to access path stats for',
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);
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expect(grepTool.validateToolParams(params)).toContain('nonexistent');
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});
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it('should return error if path is a file, not a directory', async () => {
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const filePath = path.join(tempRootDir, 'fileA.txt');
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const params: GrepToolParams = { pattern: 'hello', path: filePath };
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expect(grepTool.validateToolParams(params)).toContain(
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`Path is not a directory: ${filePath}`,
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);
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});
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});
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describe('execute', () => {
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it('should find matches for a simple pattern in all files', async () => {
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const params: GrepToolParams = { pattern: 'world' };
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const result = await grepTool.execute(params, abortSignal);
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expect(result.llmContent).toContain(
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'Found 3 matches for pattern "world" in path "."',
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);
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expect(result.llmContent).toContain('File: fileA.txt');
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expect(result.llmContent).toContain('L1: hello world');
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expect(result.llmContent).toContain('L2: second line with world');
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expect(result.llmContent).toContain('File: sub/fileC.txt');
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expect(result.llmContent).toContain('L1: another world in sub dir');
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expect(result.returnDisplay).toBe('Found 3 matches');
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});
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it('should find matches in a specific path', async () => {
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const params: GrepToolParams = { pattern: 'world', path: 'sub' };
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const result = await grepTool.execute(params, abortSignal);
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expect(result.llmContent).toContain(
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'Found 1 match for pattern "world" in path "sub"',
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);
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expect(result.llmContent).toContain('File: fileC.txt'); // Path relative to 'sub'
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expect(result.llmContent).toContain('L1: another world in sub dir');
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expect(result.returnDisplay).toBe('Found 1 match');
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});
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it('should find matches with an include glob', async () => {
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const params: GrepToolParams = { pattern: 'hello', include: '*.js' };
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const result = await grepTool.execute(params, abortSignal);
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expect(result.llmContent).toContain(
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'Found 1 match for pattern "hello" in path "." (filter: "*.js")',
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);
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expect(result.llmContent).toContain('File: fileB.js');
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expect(result.llmContent).toContain(
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'L2: function baz() { return "hello"; }',
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);
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expect(result.returnDisplay).toBe('Found 1 match');
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});
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it('should find matches with an include glob and path', async () => {
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await fs.writeFile(
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path.join(tempRootDir, 'sub', 'another.js'),
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'const greeting = "hello";',
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);
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const params: GrepToolParams = {
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pattern: 'hello',
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path: 'sub',
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include: '*.js',
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};
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const result = await grepTool.execute(params, abortSignal);
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expect(result.llmContent).toContain(
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'Found 1 match for pattern "hello" in path "sub" (filter: "*.js")',
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);
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expect(result.llmContent).toContain('File: another.js');
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expect(result.llmContent).toContain('L1: const greeting = "hello";');
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expect(result.returnDisplay).toBe('Found 1 match');
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});
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it('should return "No matches found" when pattern does not exist', async () => {
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const params: GrepToolParams = { pattern: 'nonexistentpattern' };
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const result = await grepTool.execute(params, abortSignal);
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expect(result.llmContent).toContain(
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'No matches found for pattern "nonexistentpattern" in path "."',
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);
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expect(result.returnDisplay).toBe('No matches found');
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});
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it('should handle regex special characters correctly', async () => {
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const params: GrepToolParams = { pattern: 'foo.*bar' }; // Matches 'const foo = "bar";'
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const result = await grepTool.execute(params, abortSignal);
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expect(result.llmContent).toContain(
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'Found 1 match for pattern "foo.*bar" in path "."',
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);
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expect(result.llmContent).toContain('File: fileB.js');
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expect(result.llmContent).toContain('L1: const foo = "bar";');
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});
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it('should be case-insensitive by default (JS fallback)', async () => {
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const params: GrepToolParams = { pattern: 'HELLO' };
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const result = await grepTool.execute(params, abortSignal);
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expect(result.llmContent).toContain(
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'Found 2 matches for pattern "HELLO" in path "."',
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);
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expect(result.llmContent).toContain('File: fileA.txt');
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expect(result.llmContent).toContain('L1: hello world');
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expect(result.llmContent).toContain('File: fileB.js');
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expect(result.llmContent).toContain(
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'L2: function baz() { return "hello"; }',
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);
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});
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it('should return an error if params are invalid', async () => {
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const params = { path: '.' } as unknown as GrepToolParams; // Invalid: pattern missing
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const result = await grepTool.execute(params, abortSignal);
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expect(result.llmContent).toBe(
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"Error: Invalid parameters provided. Reason: params must have required property 'pattern'",
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);
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expect(result.returnDisplay).toBe(
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"Model provided invalid parameters. Error: params must have required property 'pattern'",
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);
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});
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});
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describe('getDescription', () => {
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it('should generate correct description with pattern only', () => {
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const params: GrepToolParams = { pattern: 'testPattern' };
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expect(grepTool.getDescription(params)).toBe("'testPattern'");
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});
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it('should generate correct description with pattern and include', () => {
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const params: GrepToolParams = {
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pattern: 'testPattern',
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include: '*.ts',
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};
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expect(grepTool.getDescription(params)).toBe("'testPattern' in *.ts");
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});
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it('should generate correct description with pattern and path', () => {
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const params: GrepToolParams = {
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pattern: 'testPattern',
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path: 'src/app',
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};
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// The path will be relative to the tempRootDir, so we check for containment.
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expect(grepTool.getDescription(params)).toContain("'testPattern' within");
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expect(grepTool.getDescription(params)).toContain(
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path.join('src', 'app'),
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);
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});
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it('should generate correct description with pattern, include, and path', () => {
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const params: GrepToolParams = {
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pattern: 'testPattern',
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include: '*.ts',
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path: 'src/app',
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};
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expect(grepTool.getDescription(params)).toContain(
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"'testPattern' in *.ts within",
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);
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expect(grepTool.getDescription(params)).toContain('src/app');
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});
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it('should use ./ for root path in description', () => {
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const params: GrepToolParams = { pattern: 'testPattern', path: '.' };
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expect(grepTool.getDescription(params)).toBe("'testPattern' within ./");
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});
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});
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});
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